Answer:
The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Consumers are animals and they get their energy from the producers or from organisms that eat producers.
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according to the dichotomous key organism 3 is a
A) leech
B) bristle worm
C) water scorpion
D) dragonfly nymph
Answer
The correct answer is A) leech
Explanation:
According to the dichotomous key organism 3 is a leech. Therefore, option (A) is correct.
What is a dichotomous key?A dichotomous key is a tool used by biologists to identify organisms based on their characteristics. It consists of a series of questions with two possible answers for each question. By following the path of the key, the user can narrow down the possible identities of the organism until a final identification is reached.
Dichotomous keys are often used to identify species in fieldwork and can be based on physical characteristics such as color, size, and shape, or other traits such as behavior, habitat, and geographic range. These keys provide an efficient way to identify organisms and are widely used in fields such as ecology, botany, and zoology. However, the accuracy of a dichotomous key depends on the quality and specificity of the questions used and the expertise of the user in interpreting the results.
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Which of the following mutations would most likely be passed along to an organism's
offspring?
A. Mutation that occur during crossing over during the prophase stage of mitosis
B. Mutations that occur in both DNA strands synthesize do the S-phase of mitotic cell cycle
C. Mutations that involve translocation of chromosomes in gametes
during meiosis
D. Mutations that occur in Somatic cells During cell division
Mutations that involve the translocation of chromosomes in gametes during meiosis are likely to be passed to offspring (Option C). It is because mutations are inherited from germinal cells.
Mutations and MeiosisMeiosis is a cell division by which a cell produces four daughter germinal cells having half of the genetic material.
Moreover, a mutation is any alteration in the genetic material of the genome of an organism.
Germinal mutations can be inherited because they occur in the germinal meiotic cells, whereas mitotic (somatic) cells are not inherited.
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If a dog starts to put its paw down on a sharp stone, the tough skin skin protects underlying structures from damage. Additionally, touch receptors in the skin send sensory signals to the spinal cord. The spinal cord then sends a signal to the muscles to lift the paw rather than continuing to press down. In this scenario, the dog may experience discomfort but avoid injury.
What two body systems are being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw?
A.
integumentary and nervous systems
B.
circulatory and nervous systems
C.
circulatory and lymphatic systems
D.
integumentary and lymphatic systems
PLZZ HELP QUICKKK
The two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.
What is the organ system?The dog's response to the sharp stone involves the coordinated action of two body systems: the integumentary system and the nervous system. The integumentary system consists of the skin and its associated structures, including hair, nails, and glands. The skin acts as a protective barrier between the external environment and the underlying tissues, and it has specialized structures, such as tough, keratinized layers in the paw pads, that can withstand pressure and protect the sensitive tissues underneath.
Hence, the two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.
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6. Which marrow was denser (had more mass in the given volume)? What impact would that have on the overall density of the bone?
Answer:
The beef bone marrow was denser than the chicken bone because it had more mass in the given volume. Since the chicken must fly, it cannot have its bones weighing it down on the land. However, cows must find grass on land and travel long distances. This would increase the overall density of the bone.
Explanation:
I finished this assignment last week and received 50/50 points! Trust me on this! :)
Which of the levels of organization is blood classified as?
A. cell
B. tissue
C. organ
D. organ system
Answer:from what i saw it is b
Explanation:
In the levels of organization the blood is classified as tissue, it is the type of connective tissue, hence option B is correct.
What is blood?Blood is a connective tissue, which is made up of several blood cells and water, it is a fluid material that transports the gases and other materials inside the body.
It includes red blood cells, white blood cells, plasma, and thrombocytes, blood is not only used to transport oxygen and carbon dioxide, but it is responsible to carry waste material to the kidney and filter the blood in body circulation.
In the human body, it maintains the homeostasis condition and fights infection by producing antibodies, this makes our body in immunized condition.
Therefore, levels of the organization are blood classified as tissue is the correct answer.
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Microtubules and microfilaments are elongated structures that cross the cell, giving support to the cell, and carries organelles and objects throughout the cell. Their supporting structure would be most like which system of a multicellular organism?
Answer: Their supporting structure would be most likely the MUSCULOSKELETAL SYSTEM of the multicellular organisms.
Explanation:
The musculoskeletal system found in multicellular organisms are made up of structures which provides support, protection and allows for various movements. These structures include:
--> Muscles
--> Cartilage
--> Ligaments
--> Tendons and
--> Joints
Furthermore, Microtubules and microfilaments are the major components of cytoskeleton. They are the structures that gives a cell it's shape and helps organise it's parts. As described in the question, they are elongated structures that cross the cell, giving SUPPORT to the cell, and carries organelles and objects throughout the cell.
Therefore, since the Microfilaments and Microtubules provides support and shape at the cellular level it can be most likened to the musculoskeletal system of multicellular organisms which performs the same functions.
Which of the following would be considered part of an emerald tree boa's ecological niche? Select all that apply. mating ritual inhabiting the tree canopy humans eating birds
Answer:
Eating Birds, and Inhabiting the tree canopy are the answers
Explanation:
Complimentary RNA sequence to ACATTTCAGACCGTC
HURRY
Answer:
UGUAAAGUCUGGCAG
Explanation:
In rna all codes that are copied from DNA are swap for their base pairs and T is replaces with U
Describe how a protein would be changed if a base sequence mutates
from GGA to TGA.
Answer:
The protein would contain threonine instead of proline
Explanation:
The shape of the protein may be changed when a base sequence mutates from GGA to TGA.
What do you mean by Mutation?A Mutation may be defined as a sudden, stable, and inheritable change that occurs in the genetic material of an organism.
The amino acid sequence would be different, as GGA codes for Glycine, while UGA or TGA codes for stop codon which terminates the process of protein synthesis.
The protein which may be synthesized may not work correctly. In other words, the protein would be functional less.
Therefore, the shape of the protein may be changed when a base sequence mutates from GGA to TGA.
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pls help me out with this and thanks for the help
Explanation:
hope it helps:^❤is A flamboyant leaf closing at night sensitivity
Answer:
jwjwiiwowowejwkkwkwiwiwiwwiiwowowow
The new idea however, became herbivores were not just controlled from the bottom, but they also had to be controlled from the top down by predators. This new idea was called what
Answer:
it sounds like the question is talking about Top-down control but i dk if that's the answer because it's in the question
(c) Based on the data in Figure 1, describe whether or how the size of the leopard population appears to have been affected by the lion population over the period for which data were analyzed. The scientists also estimated the consumed biomass of the prey animals of the leopards and lions. They estimated that the lions annually ate a total of approximately 175,000 kg of prey animals. This included approximately 110,000 kg of very large animals. Calculate, to the nearest whole number, the percent of the total biomass eaten by the lions that is composed of very large animals.
Answer: 62.9%
Explanation:
Figure one is not available so I cannot answer the first part of the question.
The second part however, has the relevant information required.
The percentage of large animals eaten by lions from the total amount of biomass eaten by lions is:
= Weight of large animals / Total weight of animals eaten by lions * 100%
= 110,000 / 175,000 * 100%
= 62.9%
Please help me this is really hard to understand it’s a matching solving for physiology
Pls help me and thank you so muchhh
Answer: the volume would total 120 cubic inches.
Explanation:
This is the equation: Volume = length x width x height. For example, if the measurements of your prism are 6 inches, 5 inches and 4 inches, the equation would look like this: Volume = 6 x 5 x 4.
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1. Define celular respiration
2.What types of organisms use cellular respiration?
3 In which cell organele does most of aerobic celular respiration occur?
4.What are the reactants of aerobic celular respiration?
5.What are the end-products of aerobic cellular respiration?
6. What is the chemical equation for aerobic cellular respiration? How does it relate to the
chemical equation for photosynthesis ?
7. What are the 3 stages of aerobic cellular respiration? Where in the cell does each stage
occur and how many molecules of ATP are generated for each stage? Which stage generates
the most amount of ATP?
8. What types of organisms/cels utilize anaerobic celular respiration?
9. What are the two types of anaerobic respiration?
10. What is fermentation?
What organisms utilize fermentation?
11. Where in the cell does
fermentation take place?
12. What are the end-products of fermentation?
13. How many ATP molecules are generated during fermentation?
14. What types of organisms/cells utilize lactic acid anaerobic respiration? How many molecules
of ATP are generated by lactic acid respiration?
Explanation:
1. Cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances.
2.Bacteria, Archea, Plants, Protists, Animals and Fungi.
3.Mitochondria-The eukaryotic cell structure where cellular respiration occurs.
4.Glucose reacts with Oxygen
5.Carbon dioxide and water
6.C6H12O6+6O2 yields 6CO2+6H2O+ energy.
it's the direct opposite of the photosynthesis
chemical equation.
7.Glycolysis-cytoplasm, 2 ATP.
Krebs cycle-mitochondria, 34 ATP.
Oxidative phosphorylation-mitochondria, 26 ATP.
Krebs cycle produces the most ATP.
8.Bacteria and Archaea.
9.Alcohol fermentation and lactic acid fermentation.
10.Fermentation is the process in which energy can be released from glucose even though oxygen is not available.
Many bacteria and yeasts.
11.The cytoplasm
12.alcohol, glycerol and carbon dioxide from yeast.
13.2 ATP
14.Bacteria, 2 ATP molecules.
Select ALL the correct answers.
Which of the following statements about energy in systems are true?
The amount of energy in a system must equal the amount of matter in the system.
Energy can be changed from one form to another.
When energy leaves a system, it is transformed into matter.
Energy can be transferred into or out of a system.
Answer:
When energy leaves a system it is transformed into matter
Explanation:
First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another.
Which area of this sound wave represents the greatest rarefaction?
Answer:
Its A i had hos question in usatestprep
Explanation:
Answer:
A represents a rarefaction
Explanation:
This is the area where the density of the wave is lowest.
What is the correct order of classification from largest (most organisms) to smallest (least organisms - most specific)?
A. SGFOCPKD
B. OCKPDKGFS
C. KDPOCGFS
D. DKPCOFGS
Answer:
B
Explanation:
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A population of birds exhibits Type II survivorship. A predator is introduced that feeds on hatchlings, causing a change in the survivorship of the birds. Which of the following would most likely represent survivorship of the birds after the introduction of the predator? the answer choices are the images below.
Answer:
D
Explanation:
I took the test and got it correct
The fourth graph would most likely represent survivorship of the birds after the introduction of the predator. Thus, option D is correct.
What the population of birds exhibits Type II?A population of birds exhibits Type II survivorship. A predator is introduced that feeds on hatchlings, causing a change in the survivorship of the birds. A survivorship curve refers to a graph showing the number or proportion of individuals surviving to each age for a given species or group. There are three types of survivorship curves as follow:
Type I curves depict individuals that have a high probability of surviving to adulthood. For example, large mammals have type 1 survivorship curves, because they have a. low infant mortality and high rates of survival into old age.
Type II curves also called as intermediate type, it depict individuals whose chance of survival is independent of age. For example, most birds have type 2 survivorship curves birds die more or less equally at each interval of their age.
Therefore, The fourth graph would most likely represent survivorship of the birds after the introduction of the predator. Thus, option D is correct.
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Which of the following statements are true?
A All compounds are molecules, but not all molecules are compounds.
B All molecules are compounds, but not all compounds are molecules.
Something is either a compound or molecule, it can never be both.
D
Molecules and compounds mean the same exact thing.
Answer:
I think A is true
Explanation:
Any combination of atoms is a molecule, but when its a combination of atoms from different elements, its known as a compound.
Why is it necessary to genetically engineer the bacteria to produce insulin instead of inserting the insulin gene in humans?
Answer:
????????????????
Explanation:
RDNA technology made it possible for bacteria to express an insulin gene from humans for production of insulin synthetically.
What is recombinant DNA technology?Alteration of genetic material from one organism to another, to obtain desired and enhanced genetic characteristics in recombinant organism, is called as recombinant DNA technology.
In this method different genetic material from different organisms can be combined to develop desired characteristics, for example, DNA from two different species is joined together, and the recombinant DNA molecule is then inserted into host organism to produce new genetic combination with higher medicinal, scientific or agricultural values.
Genetically modified bacteria are used for production of human insulin, which cause less immune reactions as compared to the pig or cow version of insulin.
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please help i am giving away brainiliest
1. Which body system is primarily responsible for protecting you against pathogens?
A. Digestive system
B. Nervous system
C. Endocrine system
D. Immune system
No dam links
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Answer:
A- Chromosome, DNA, Gene
Explanation:
Chromosomes have two sister chromatids that connect at the centromere forming a shape similar to an X. DNA is found in a double helix formation, including Adenine, Thymine, Guanine, and Cytosine. Genes are found per singular section of the DNA double helix.
Answer: A
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Help please do soon!
Answer:
The relationship between the fossil fuel and carbon is that once the fossil fuel is used, it releases carbon dioxide into the air.This proves that fossil fuels have a relationship to carbon dioxide.
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Which of the following correctly matches a property of an organic molecule with how that property helps the organic molecule function in living organisms?
A. Carbohydrates lower the activation energy of certain reactions. This allows metabolic processes to take place at a rate that can sustain life.
B. Proteins contain nucleotides that encode genetic material. This allows proteins to accurately pass genetic information from one cell to another.
C. Nucleic acids contain multiple carbon-hydrogen bonds. This allows nucleic acids to provide energy for living organisms by breaking these bonds.
D. Lipids are insoluble in water. This allows lipids that make up biological membranes to regulate the entry and exit of many substances.
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Answer:
C. Lipids are insoluble in water. This allows lipids that make up biological membranes to regulate the entry and exit of many substances.
Explanation:
which plant structure is most similar in function to a lizards eggs?
answer choices:
flowers
pollen
seeds
stems
(pls don’t guess or leave links)
Answer:I would say seeds, since it protects the bud of a flower and then the flower “hatches” from the seed and grows
Explanation:
The plant structure that is similar in functions to eggs is seeds. The correct option is C.
What are seeds?A seed is an embryonic plant with a protective outer covering and a food reserve. The formation of the seed is a part of the reproduction process in seed plants, including gymnosperm and angiosperm plants.
Similarly, an egg is an oval or round object laid by a female bird, reptile, fish, or invertebrate that typically contains a developing embryo.
Bird eggs are protected by a chalky shell, whereas reptile eggs are protected by a leathery membrane.
Embryos are developing in seeds and eggs. Both provide food for the developing embryo. Both have protective coverings that keep them from drying out.
Thus, it can be concluded that the correct option is C.
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Describe two types of living things that biologists could study. Think about types of living things that are not in the ocean — what categories of living things are on land?
Answer:
Following are the two types of living things that biologists could study:
1) Animals
2) Plants
Explanation:
As we know plants and animals are the most important organisms. Animals has further categories of living things are on land:
1) Birds
2) Mammals
3) Reptiles
4) Amphibians
Fishes are not included because they are in water but not on land.
The mountain ash produces a bright red berry fruit. How has the mountain ash tree evolved in order to allow its seeds to be spread far from their source?
A. The leaves are brightly colored and attract animals to the plant,
B. The seeds are in berries that are eaten by birds and dropped as waste away from
the plant
C. The seeds are lightweight so animals can pick them up and carry them back to
their nests
D. The seeds have light stems that allow them to be carried by the wind,
Answer:
The correct answer is - B. The seeds are in berries that are eaten by birds and dropped as waste away from the plant.
Explanation:
The mountain ash trees contain red berries fruits that attract birds and other organisms. These birds eat these berries and eat berries and fly over the hills or mountains and after digesting they drop the seeds of these berries with the digestive waste. These berries grow on the mountains far from the original source as birds carry them by flying away after eating.
Thus, the correct answer is option B.
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Answer:
I believe it is b
please tell my if I'm right